var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
//引入数据库连接数据
require('./util/dbConnect.js')
//引入model
require('./model/userModel.js');
require('./model/classModel.js');
require('./model/studentModel.js');
require('./model/teacherModel.js');
require('./model/courseModel.js');

//一级路由
let usersRouter=require('./routes/users');
let usersclass=require('./routes/class');
let usersstudent=require('./routes/student')
let usersteacher=require('./routes/teacher');
let userscourse=require('./routes/course');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


app.use('/users', usersRouter);
app.use('/class', usersclass);
app.use('/student', usersstudent);
app.use('/teacher', usersteacher);
app.use('/course', userscourse);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

// module.exports = app;
app.listen(1888,()=>{
  //当服务器启动成功时要执行的代码
  console.log(`服务器启动成功，端口号为1888`);
})
